Using comet light-curve asymmetries to predict comet returns

Details Using comet light-curve asymmetries to predict comet returns Using comet light-curve asymmetries to predict comet returns

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990natur.345..235f&link_type=abstract

Nature (ISSN 0028-0836), vol. 345, May 17, 1990, p. 235-238.

Astronomy and Astrophysics

Astronomy

18

Comets, Light Curve, Orbit Calculation, Solar Orbits, Hydroxyl Radicals, Perihelions, Comets, Astronomy, Lightcurve, Optical Properties, Symmetry, Motion, Short-Period Comets, Orbits, Gases, Production Rate, Brorson-Metcalf, Orbital Elements, Calculations, Perturbations, Acceleration, Catalog, Data, Magnitude, Analysis, Procedure, Parameters

Scientific paper

The gravitational attractions of the sun and planets do not account completely for the orbital motions of short-period comets. To clarify the roles of the radial and transverse components of the nongravitational force on such comets, observational data on gas production rates from the comets are used here as a diagnostic of the force. The shapes of the production curves, based mostly on visual light curves, correlate very well with the nongravitational delays or advances of a number of comets. This correlation is used here to predict a substantial advance of the recent perihelion passage of comet P/Brorsen-Metcalf, as verified by observations.

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